I am working on an estimate for a large house in a very affluent neighborhood. The homeowner is very proud of their home and obviously has spent a lot of time and painstaking effort to build this home. She has a few brick walkways and steps that she said was built using a handmade brick and was told by the brick company that no pressure could be used to clean these areas, and has recommended less than 100psi be used. So these will have to be hit using my 12v which is no problem. However, I have never rinsed with my 12v. I have used it to hit brick areas with a hot mix but have always come back and hit it with my pressure washer at obviously more than 100psi. Has anyone rinsed with their 12v in a situation like this before? I am trying to get away with still rinsing with my soap nozzle on my pressure washer, but even at that low of a pressure she is still worried about damage to the brick. Question is, has anyone done a true low pressure wash on concrete using only a 12v and if so how did it turn out? Here are a couple pics for reference. There are several and a few that are worse than these pics.
That’s the only way we wash concrete is with 12v system. Same as roof mix with catalist let dwell. Brush sides so it doesn’t kill the grass. I use catalyst to neutralize in 4 hours hose off spot treat with steam unit
You could just rinse it with a water hose connected to spigot and a descent nozzle.
Use the soap tip and just back away from it so that you get enough water to dilute the sh
Sheesh, hit it with a roof mix in your 12v, rinse it with your m5ds set to moderate fan from 2-3 feet away. I’ve cleaned a fair amount of expensive homes that have similar. Brick company full of crap. I get that much pressure out of my garden hose at the house.
PS: The fine spray will clean the mortar up. May need to hit it a couple of times with 12v in places, but I doubt it
I have a m5ds if you don’t. you’re welcome to use it
I x jet those with no proportioner and rinse with a m5ds. Easy day.
I can’t imagine that would clean concrete.
Catalyst? What exactly do you mean your using a catalyst?
I agree that the brick company is full of crap. The homeowner is actually very educated and knowledgeable but not in a bad way. Very nice lady and I’m just trying to accommodate her requests. Will end up being a good size job and I could definitely use it to fill some holes in my schedule. Just have never really done a whole concrete job without at least a little pressure. Thanks for all the replies!
Try it
My chemical supplier sells a product called brown stuff it’s a catalyst that heats up the mix then neutralizes the sh in 4 hours I love it
You’re saying just spray 4% and then the brown stuff and concrete is clean? What about the actual dirt? Do you rinse?
Concrete mix. 12.5 sh/ brown stuff I’m not sure where you got 4% I’m not ds for concrete I mix it in 15 gallon batches. 1 gallon of brown per batch. Rinse with soap tip and hot water then yes concrete it clean no surface cleaner needed
I’m a little confused as to what percentage of sh is hitting the concrete.
12.5 12v system
Im curious about the sh and brown stuff sounds pretty cool but im so lazy to look up the sds sheet on it lol.
Are youbusing hot water to rinse with a ballvalve or are you wanding it?
I use the pw to rinse Sutter gun with short wand and a black tip. Turns it to steam that’s how I rinse
So now I’m confused are you guys not using sh to clean concrete? What are you using?
Surface cleaner then post treating with a out 3 or 4%. You are the first i have seen doing that. Im wondering how well your method is working you got any before and afters on concrete?
